If you're looking to renew your Disney+ subscription or sign up in time to add this program to your queue, according to a new profile article in Entertainment Weekly, the show will be airing in December. It features an interesting overview of how the series will distinguish itself within the franchise as well as honor its' existing traditions (such as having Trevor return as scorer). Additionally, according to fansite Disney Plus Informer, Edge of History will premiere on December 14th with the first two episodes then new episodes once a week thereafter.
https://ew.com/tv/national-treasure-edge-of-history-lisette-olivera-succeeding-nicolas-cage/
ETA: here is the official trailer.
